CHAPTER 4 CONCLUSION
In this thesis, a miniaturized DVB-H antenna is constructed by traveling-wave architecture using a bow-tie structure. To achieve DVB-H band, an antenna boundary follows a curve of of x to the power of N function . By dint of x to the power of N, frequency response is realized systematically in the design process. The measurement shows that a wide bandwidth is achieved, about 350 MHz, from 450 MHz to 800 MHz with return loss less than -10dB. The radiation characteristics of the proposed antenna were computed using Ansoft HFSS, which was expected to provide reliable information for the proposed antenna. The computed results shows that the radiation patterns are near-omnidirectional, which are similar to a monopole. The computed antenna gain varies from 2.18 to 3.54 dBi over the DVB-H band and is a reasonable value for DVB-H band.
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[30] 吳武順﹐以碎形特徵作玻璃上數位電視平面天線之設計﹐私立大同大學通訊 工程研究所碩士論文﹐中華民國九十四年十月。